Hello!
I've been closely following the discussions on this topic in the community pages for weeks. I have similar experiences with battery life, just like most people here. My two-year-old iPhone 13 Pro had significantly better battery life with 87% battery health.
I'm using the new iPhone 15 Pro with:
- eSim exclusively
- Apple Watch Series 9
- Background app refresh off for 95% of all apps
- Screen always on turned off, and so on.
Last week, I reinstalled the device from a backup via Mac (deleted everything in the backup except settings and Apple's own apps). There was no change in battery performance, however it took me a whole day to restore the phone.
Yesterday, I boarded a plane with the battery at 85%, with battery save mode and airplane mode on. After 12 hours, when I got off the plane, I had lost nearly 10 percentage points of battery capacity. The maximum screen time during this flight was 10-15 minutes. I didn't listen to music or anything else in the background.
What could be draining the battery so much with airplane mode and battery save mode on when the phone is inside the seat pocket for 12 hours (as shown in the yellow area)?
We've decided to cancel the order for my girlfriend's iPhone 15 Pro based on my disappointing experiences with the 15 Pro. We think for now she is better off with her 13 Pro.
I feel like I've been thrown back into year 2009 in terms of battery life.